A385488 Decimal expansion of the surface area of a gyroelongated pentagonal birotunda with unit edge.
3, 7, 9, 6, 6, 2, 3, 6, 8, 8, 2, 7, 5, 6, 3, 7, 6, 0, 0, 8, 3, 8, 2, 6, 0, 7, 1, 4, 3, 7, 2, 2, 0, 3, 8, 8, 6, 2, 3, 1, 6, 5, 4, 2, 5, 7, 8, 2, 2, 6, 1, 8, 6, 2, 3, 1, 0, 4, 3, 2, 0, 6, 2, 7, 8, 8, 0, 5, 7, 5, 8, 0, 7, 5, 5, 9, 5, 5, 9, 5, 1, 4, 6, 8, 0, 0, 7, 5, 6, 7
Offset: 2
Examples
37.966236882756376008382607143722038862316542578226...
Links
- Paolo Xausa, Table of n, a(n) for n = 2..10000
- Wikipedia, Gyroelongated pentagonal birotunda.
Programs
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Mathematica
First[RealDigits[10*Sqrt[3] + 3*Sqrt[25 + 10*Sqrt[5]], 10, 100]] (* or *) First[RealDigits[PolyhedronData["J48", "SurfaceArea"], 10, 100]]
Comments